Compound link

The group of atoms with which you can describe the structure of the polymer . A composite link that is repeated many times is called a repeating composite link . If upon receipt of the polymer, the monomer is fully incorporated into its composition, then the repeating constitutional unit is a monomer unit . If the production of a polymer is accompanied by the release of low molecular weight products, such as water, gases, then the structure of the compound (or repetitive compound) link will differ from the structure of the monomer and such a link cannot be called monomeric. The number of repeating units ( n ) can vary widely - from tens to tens of thousands. As a rule, macromolecules of various lengths are contained in one polymer, i.e. with a different number of repeating compound links. The transition from low molecular weight compounds to the polymer occurs as a result of an increase in the number of repeating units. At the same time, physical and chemical properties change noticeably, but when a certain value of n is reached, they cease to change, despite a further increase in the number of links. From this moment on, the compound becomes a polymer .